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  1. R

    Fuel issues, crank no start

    Your FPR is either disconnected or faulty, or you may have circuit problems
  2. R

    Hurt my Jetta last night ?

    Use the 'string method' and get it as straight as you can, then drive it some and see what you think. When everything else is finished, then you can decide on alignment.
  3. R

    GM upfitter electrical manuals

    I have 2 GB, about 1300+ docs for you. It is a GOOD idea, but someone has to do the work to keep it up or it will be like the older GM UPFITTERs files.
  4. R

    LLY ECM and TCM pinouts

    enter this in your browser as a URL: gm upfitter 2003 electrical manual full size The older truck listings are all mixed up and very hard to find what you want.
  5. R

    LMM: ECM P2510 ECM Relay code HELP!!

    See post #2
  6. R

    LMM Blowing DLIS fuse

    Yes, the ignition switch or circuit is bad. TEST to make sure before buying parts.
  7. R

    LMM Blowing DLIS fuse

    34 DLIS Fuse 2A powers the Ignition Switch and Theft Deterrent Module (TDM) My WAG is the ignition switch or wiring circuit
  8. R

    P0088, P0191

    Those are both circuit codes See the attachments. Intermittent problems are hard to find - just need the right way to get them to act up.
  9. R

    2007 Lmm rebuilt motor, will not run

    Connector sensor diagrams
  10. R

    2007 Lmm rebuilt motor, will not run

    See attaehment
  11. R

    Coolant flush on the LMM

    4 new high-quality tires properly balanced sure make it seem like you have a new truck, at a much smaller price. Hard choice to be sure.
  12. R

    LML fueling

    MAF, MAT, ECT, etc all the usual suspects. How's the boost? If you demand full fuel pressure with your scanner, will it max out the actual fuel pressure?
  13. R

    No ecm tcm or gpcm

    So if TCM is connected thru CANBUS but your scanner cannot communicate with it, it has power and ground, then I am with James on post #2.
  14. R

    No ecm tcm or gpcm

    I don't think you will see the TCM with a scanner if the CANBUS connection at the TCM has been wired around.
  15. R

    L5P will barely start, then die Please Help

    https://www.duramaxdiesels.com/forum/threads/oil-prime.90198/#post-1237338 Last post
  16. R

    Coolant flush on the LMM

    It is surprising how much stuff can make its way through the other devices and end up on the radiator. I think you will be happy with the work that you have done.
  17. R

    Coolant flush on the LMM

    Maybe some help in the pictures
  18. R

    Wiring Issues

    https://www.dtcdecode.com/Chevrolet/P1226
  19. R

    Looking for some help figuring out what is going on

    https://static.nhtsa.gov/odi/tsbs/2015/MC-10113715-9999.pdf
  20. R

    Looking for some help figuring out what is going on

    Download the electrical manual here: Note that the manual covers 2003-2006 https://www.gmupfitter.com/wp-content/uploads/2021/05/2006_LD_CKFullSizeElectrical.pdf
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